Just did as you suggested, and the amount of posts asking about the oneUI 4 beta just goes to show how Samsung is failing in its communication department.
The beta is out in other regions already, and the said post from Samsung stated that its available also in the UK, which clearly isn't the case... hence the amount of posts / questions on the beta availability! People are starting to think that they are doing something wrong, hence not having the beta already, whilst it's really Samsung that's at fault for giving false/ premature information!
Up your game Samsung, and treat your customers with more respect.
That's my opinion on the whole Beta saga